Two part foam spray-in insulation is becoming the standard in new home construction. It installs quickly, it boasts a high R-value per inch, and it prevents energy-stealing air leaks. Until fairly recently only pros could do this job, but lately companies like Dow Chemical have released products like the Froth-Pak 12 — it’s the same foam the pros use, but scaled down for smaller Jobs like fixing those pesky air leaks.
Froth-Pak’s two part chemical reaction creates a fast-expanding, quick-curing polyurethane foam that you can spray anywhere. Unlike Dow’s other foam product “Great Stuff,” you can spray Froth-Pak through a variety of nozzles. A wide fan nozzle broadcasts the material to cover more area per pass, while a “pour” nozzle helps to fill in larger gaps.
The Froth-Pak 12 kit runs about $35 and covers 12 board feet (.03m³). Dow also makes larger kits for the more ambitious among you.